Popular 16pcs hole saw set, includes widely used size from 3/4"~5", bright ... Thin Metal Sheetthe kit includes:1) 13pcs hole saws: 19mm(3/4"), 20mm(25/32"), 22mm(7/8"), 25mm(1"), 29mm(1-1 ... /8"), 2mm(1-1/4"), 35mm(1-3/8"), 38mm(1-1/2 ... /4"), 51mm(2"), 57mm(2-1/4"), 67mm(2-5/8"), 76mm(3") 2) 1pc extension bar 12"(300mm) 3) 2pcs ...